Investigating Data

For which set of scores below is the mean the same as the median?

• 2, 2, 3, 3, 4

• 1, 2, 3, 4, 5, 6, 7, 8

• 3, 4, 4, 4, 5

• 1, 2, 5, 6

Which one of these is a measure of spread?

• interquartile range

• outlier

• mode

• median

The scores 4, 3, 7 and y have a mean of 4. What is the value of y?

• 4

• 3.5

• 2.5

• 2

Which one of these measures is not part of a five-number summary?

• upper quartile

• median

• lower extreme

• mean

Which one of these measures depends upon the value of every score in the data set?

• mode

• interquartile range

• mean

• range

The six chefs at a restaurant earn the following weekly wages: $520, $610, $610, $630, $660 and $710. How will another wage of $400 affect the mean and median of this set of wages?

• The mean and median will both increase.

• The mean and median will both decrease.

• The mean will increase and the median will decrease.

• The mean will decrease and the median will increase.

Which of the following measures is least affected by an outlier in the data set?

• mode

• range

• mean

• median

Alice's average mark for five exams is 67%. In her next exam, she wants to improve her average to 70%. What mark must she obtain in her next exam to achieve this?

• 75%

• 80%

• 85%

• 90%

Tags

CCSS.6.RP.A.3C

The list below shows the most recent test scores for students in Mr. Garcia’s study group.

78, 90, 94, 72, 80, 68, 72, 88, 94, 98, 86, 96

Which box-and-whisker plot correctly represents the data in the list?

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Johnathan analyzed a set of data. He noticed that 50% of the data was

between 84 and 89. He also noticed that 50% of the data was between

88 and 91. The lowest data point was an 82. Which box plot could

represent the set of data Johnathan analyzed?

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